Air purifier



FIG. 1 is a perspective view of an air purifier showing our new design;

FIG. 2 is another perspective view of the air purifier of FIG. 1;

FIG. 3 is a front elevational view of the air purifier of FIG. 1;

FIG. 4 is a rear elevational view of the air purifier of FIG. 1;

FIG. 5 is a left-side elevational view of the air purifier of FIG. 1;

FIG. 6 is a right-side elevational view of the air purifier of FIG. 1;

FIG. 7 is a top plan view of the air purifier of FIG. 1;

FIG. 8 is a bottom plan view of the air purifier of FIG. 1; and,

FIG. 9 is an enlarged detailed view of the air purifier in FIG. 1.

The broken lines in the drawings are for the purpose of illustration elements of the air purifier that form no part of the claimed design. The unshaded recessed interior surfaces within the grill of the air purifier form no part of the claimed design. 

CLAIM The ornamental design for an air purifier, as shown and described. 